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A279242 as a simple table

na(n)
00
11
21
3-1
4-103
529
68671
715361
8-417031
9-17815069
101361877889
1121067460461
12-679886788111
13-31579084114577
14354886157315257
152898608704594607
16-569165778828429437
17-167337689371017456229
18434029941439492698221
1933444404529041130465319

[0,1,1,-1,-103,29,8671,15361,-417031,-17815069,
 1361877889,21067460461,-679886788111,
 -31579084114577,354886157315257,2898608704594607,
 -569165778828429437,-167337689371017456229,
 434029941439492698221,33444404529041130465319]